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Apple M1 Ultra

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Re: Apple M1 Ultra

#191
post #13

Earlier quoted context omitted.

That thing has four times as many transistors as a 3090.

That counts memory, right?

No, but it does include cache; the M1 Ultra should have 96MB of cache (>6B transistors) while Nvidia GPUs have relatively little cache. 128GB of DRAM has 1 trillion transistors.

Re: Apple M1 Ultra

#192

Is it actually more powerful than a top of the line threadripper[0] or is that not a "personal computer" CPU by this definition? I feel like 64 cores would beat 20 on some workloads even if the 20 were way faster in single core performance. [0] https://www.amd.com/en/products/cpu/amd-ryzen-threadripper-3...

My 1st gen 16 core Threadripper is barely faster than an M1 Pro/Max at kernel builds, so a 64 core TR3 should handily double the M1 Ultra performance. But you know, I'm still happy to double my current build perf in a small box I can stick in my closet. Ordered one :-)

No post body was provided.

Re: Apple M1 Ultra

#194

> M1 Ultra features an extraordinarily powerful 20-core CPU with 16 high-performance cores and four high-efficiency cores. It delivers 90 percent higher multi-threaded performance than the fastest available 16-core PC desktop chip in the same power envelope. Maybe not a huge caveat, as 16-core chips in the same power envelope probably covers most of what an average PC user is going to have, but there are 64-core Thre…

That line is blatantly dishonest, but not for the reasons you pointed out. While the i9-12900K is a 16-core processor, it uses Intel's version of big.LITTLE. Eight of its 16 cores are relatively low performance 'E' cores. This means it has only half the performance cores of the M1 Ultra, yet it achieves 3/4 of the performance by Apple's own graphic.

Alder Lake has been repeatedly shown to outperform M1 core-per-core. The M1 Ultra is just way bigger. (And way more power efficient, which is a tremendous achievement for laptops but irrelevant for desktops.)

Re: Apple M1 Ultra

#195

Earlier quoted context omitted.

Ice Lake shipped in 2019. The current generation is Alder Lake, which is slightly ahead of the M1 in single-threaded performance according to most benchmarks.

And massively behind in terms of power consuption

Its behind M1 but it's worth pointing out that Alder Lake is not a power-hog on "normal" workloads i.e. gaming when compared to it's other X86 competitors. It only starts cooking itself on extremely heavy workloads.

Re: Apple M1 Ultra

#196

> This enables M1 Ultra to behave and be recognized by software as one chip, so developers don’t need to rewrite code to take advantage of its performance. There’s never been anything like it. Since when did the average developer care about how many sockets a mobo has...? Surely you still have to carefully pin processes and reason about memory access patterns if you want maximum performance.

Not sure what is required of a dev, but as an example, Adobe Premiere pro doesn't take any advantage of >1 CPU, at least on Windows. https://www.pugetsystems.com/labs/articles/Should-you-use-a-...

It’s probably not “average developer” either but some of the big box software still has per-socket licensing, or had until recently anyway.

Re: Apple M1 Ultra

#198

> This enables M1 Ultra to behave and be recognized by software as one chip, so developers don’t need to rewrite code to take advantage of its performance. There’s never been anything like it. Since when did the average developer care about how many sockets a mobo has...? Surely you still have to carefully pin processes and reason about memory access patterns if you want maximum performance.

Not sure what is required of a dev, but as an example, Adobe Premiere pro doesn't take any advantage of >1 CPU, at least on Windows. https://www.pugetsystems.com/labs/articles/Should-you-use-a-...

Article is 5 years old.

Re: Apple M1 Ultra

#200
Intel 12th gen i9 is 11% better at single core and 42% slower at multicore. https://www.cpu-monkey.com/en/compare_cpu-intel_core_i9_1290...

For most non-parallel tasks, my guess is the Intel 12900K will beat at performance.

Intel's next generation will have 50% more cores and beat this chip at multithreading.

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